Simple switchers mark new family
26 January 2010
National Semiconductor has introduced the first three products in its Simple Switcher power module family.
The LMZ-series of power modules will save design time and provide ease-of-use to help system designers get their products to market faster.
They provide the efficiency of a synchronous switching regulator with the simplicity of a linear regulator, eliminating the external inductor and complex layout placement challenges typical of switching regulator designs. Other devices in this power module family will launch throughout 2010.
National’s power modules simplify power supply design for FPGAs, microprocessors, digital signal processors and other point of load conversions for medical, broadcast video, communications, industrial and military applications. Its patent-pending packaging technology provides low radiated electromagnetic interference, enabling the power modules to meet the requirements of the EN55022 (CISPR22) Class B radiated emission standard.
Their single exposed-bottom pad allows for easy and quick prototyping on lab benches, eliminating the possibility of non-visual solder bridging. The size and lead pitch of these modules enable the use of the same pick-and-place manufacturing employed with standard TO-263 packages. Each module is pin-to-pin compatible with other family members, allowing designers to create one layout to facilitate last-minute drop-in replacements if load current requirements change.
Simple Switcher power modules provide -40°C to 125°C operation, along with low output voltage ripple and a wide voltage and current range. The first release of the LMZ power modules supports the 3.3V, 5V, 12V and 24V input voltage rails and offers load currents up to 4A. Available in 7-lead, 10.16mm x 13.77mm x 4.57mm packages, the LMZ-series feature best-in-class thermal resistance (theta-JA) temperature of 20°C per watt.
The LMZ10504 supports maximum load currents of 4A with an input voltage range of 2.95V to 5.5V, whilst the LMZ12003 supports maximum load currents of 3A with an input voltage range of 4.5V to 20V. LMZ14203 also supports maximum load currents of 3A, but with an input voltage range of 6V to 42V, and all three products are available now.
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